package com.sun.controller;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * @author sun
 * @date 2021/2/18 - 10:56
 */
@Controller
public class MyController {

    @RequestMapping({"/","/index"})
    public String toIndex(Model model){
        model.addAttribute("msg","hello,Shiro");
        return "index";
    }

    @RequestMapping("/user/add")
    public String add(){
        return "/user/add";
    }
    @RequestMapping("/user/update")
    public String update(){
        return "/user/update";
    }
    @RequestMapping("/toLogin")
    public String toLogin(){
        return "login";
    }
    @RequestMapping("/login")
    public String login(String username,String password,Model model){
        //获取当前用户数据
        Subject subject = SecurityUtils.getSubject();
        //封装用户登录数据
        UsernamePasswordToken usernamePasswordToken = new UsernamePasswordToken(username, password);
       try {
           subject.login(usernamePasswordToken);//执行登录方法
           return "index";
       }catch (UnknownAccountException e){
           //用户名不存在
           model.addAttribute("msg","用户名不存在");
           return "login";
       }catch (IncorrectCredentialsException e){
           model.addAttribute("msg","密码不存在");
           return "login";
       }
    }

    @RequestMapping("/noauth")
    @ResponseBody
    public String unauthorized(){
        return "未经授权无法访问此页面";
    }

    @RequestMapping("/logout")
    public String logout(){
        Subject subject = SecurityUtils.getSubject();
        subject.logout();
        return "redirect:/login";
    }

}
